Full-Time

Product Design Engineer

Battery

Posted on 8/22/2025

CelLink Technologies

CelLink Technologies

51-200 employees

Manufactures flex harnesses for automotive

Compensation Overview

$135k - $160k/yr

+ Employee Stock Option Plan + Medical Coverage + Dental Coverage

San Carlos, CA, USA

In Person

Category
UI/UX & Design (1)
Requirements
  • Bachelor's Degree in materials science, EE, ME, physics, or equivalent.
  • Understand the requirements and performance of Li-Ion batteries in all cell formats (pouch, prismatic, and cylindrical).
  • Ability to size busbars using simulations and 1D joule heating calculations.
  • Knowledge of mechanical, electrical, and thermal material properties for common conductor materials, various types of plating, and insulating materials.
  • Experience with the design and validation of electrical interfaces, joints, and connection methods.
  • Knowledge of pack architecture and battery sizing (series and parallel connections, nominal energy, power, etc.).
Responsibilities
  • Direct creation of 3D models and 2D drawings of current collector assemblies, battery interconnects, and voltage sense harnesses.
  • Selecting termination options for connecting to BMS/PCBA, such as welded, crimped, soldered, ZIF, etc.
  • Define requirements of flex circuit products based on internal, customer, and regulatory system-level requirements.
  • Build prototype circuits (hands-on) and support launch activities.
  • Lead design reviews and DFM analysis.
  • DVP&R creation and execution to validate products along with DFMEAs and other pertinent APQP documentation.
  • Develop processes, designs, and material combinations to enhance the performance of CelLink's flexible circuits under various usage cases and applications.
Desired Qualifications
  • Experience in simulation (FEA and CFD) analysis and interpretation is preferred.
  • Experience with cell connection MFG processes such as laser-welding, ribbon/wire bonding, ultrasonic welding, resistance welding, etc.

CelLink makes flex harnesses, flex circuits that replace traditional wiring in vehicles and industrial systems. They pack power, data, and sensing into a single thin circuit, with busing, fusing, and monitoring integrated, and use automated, tool-free manufacturing for quick design changes and high-volume production. Their approach reduces weight by over 70% and volume by over 90% compared with standard wiring and targets direct sales to OEMs and hyperscalers with scalable factories. Their goal is to speed electrification and the digitization of industrial infrastructure by providing compact, reliable power, data, and sensing networks for automotive, aerospace, data centers, and grid storage.

Company Size

51-200

Company Stage

N/A

Total Funding

N/A

Headquarters

San Carlos, California

Founded

2011

Simplify Jobs

Simplify's Take

What believers are saying

  • DOE $362M loan in 2024 funds Texas factory for 2.7M EVs yearly.
  • Solid-state batteries post-2027 favor flexible circuit architecture.
  • Aerospace electrification demands lightweight interconnects by 2026.

What critics are saying

  • Tesla's 20% Q1 2026 delivery drop delays Ford, BMW production.
  • Lear's FlexConnect captures BorgWarner, Ford orders since 2025.
  • Aptiv's zonal platform in GM, VW EVs cuts harness needs 50%.

What makes CelLink Technologies unique

  • CelLink's flex harnesses reduce wiring weight by 70% and volume by 90%.
  • Automated tool-less manufacturing enables rapid design changes.
  • Integrates power, data, sensing into single thin circuits.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

401(k) Retirement Plan

401(k) Company Match

Paid Vacation

Paid Holidays

Unlimited Paid Time Off

Flexible Work Hours

Hybrid Work Options

Remote Work Options

Wellness Program

Mental Health Support

Gym Membership

Family Planning Benefits

Fertility Treatment Support

Conference Attendance Budget

Professional Development Budget

Training Programs

Tuition Reimbursement

Professional Certification Support

Mentorship Program

Phone/Internet Stipend

Home Office Stipend

Adoption Assistance

Parental Leave

Relocation Assistance

Childcare Support

Sabbatical Leave

Stock Options

Company Equity

Me

INACTIVE